---
product_id: 1144759
title: "Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Calculator for Contractors, Estimators, Builders, Framers, Remodelers, Renovators and Carpenters"
brand: "calculated industries"
price: "$2963"
currency: MXN
in_stock: true
reviews_count: 13
category: "Calculated Industries"
url: https://www.desertcart.mx/products/1144759-calculated-industries-4065-construction-master-pro-advanced-construction-math-feet
store_origin: MX
region: Mexico
---

# Multi-format dimension conversions Material waste reduction with precise estimates Time-saving built-in construction functions Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Calculator for Contractors, Estimators, Builders, Framers, Remodelers, Renovators and Carpenters

**Brand:** calculated industries
**Price:** $2963
**Availability:** ✅ In Stock

## Summary

> 📐 Build smarter, faster, and waste less — the pro’s secret weapon!

## Quick Answers

- **What is this?** Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Calculator for Contractors, Estimators, Builders, Framers, Remodelers, Renovators and Carpenters by calculated industries
- **How much does it cost?** $2963 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/1144759-calculated-industries-4065-construction-master-pro-advanced-construction-math-feet)

## Best For

- calculated industries enthusiasts

## Why This Product

- Trusted calculated industries brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Lightweight, handheld design with long-lasting batteries keeps you efficient on the go, wherever the job takes you.
- • **Cut Costs, Not Corners:** Built-in estimators for roofing, drywall, studs, and lumber help you avoid costly material waste and costly re-dos.
- • **Master Every Measurement:** Effortlessly switch between feet-inch-fractions, decimal feet, yards, and metric units for flawless accuracy on every project.
- • **Trusted Industry Standard:** Over 30 years of proven reliability, taught in top apprenticeship and trade programs nationwide.
- • **Built for Speed & Precision:** Save valuable time with instant solutions for right angles, rafters, slopes, and stair layouts—no more manual guesswork.

## Overview

The Calculated Industries 4065 Construction Master Pro is a handheld, battery-powered calculator designed specifically for construction professionals. It supports multiple measurement formats including feet-inch-fractions, decimal feet, yards, and metric, and offers built-in functions for complex construction math such as roof pitches, stair layouts, and material estimates. Trusted for over 30 years, it enhances accuracy, saves time, and reduces material waste on job sites, making it an essential tool for contractors, estimators, builders, and carpenters.

## Description

The Construction Master is and has been the industry standard for carpenters and craftsmen for over 30 years. Its use is taught in apprenticeship and training programs at the high-school, college, union and industry level across our country and beyond. An entire generation of framers and stick-builders grew up using it and advising us on new capabilities they wanted built-in. Building materials and techniques have changed over the years but geometry and the need to work quickly and accurately with dimensions is as important and difficult as ever. Put the time-tested Construction Master Pro on your next project and you’ll be glad you did.

Review: Quality, reliability, good product - It is has a good used
Review: Accurate, time-saving construction calculator - I’ve had this construction calculator for a while now and absolutely love it. I use it most often for roof pitch calculations and for confirming square, and it’s been consistently accurate. Once you get the hang of how it works, it’s quick, easy, and very efficient. It really saves time compared to doing everything manually or double-checking with other methods. One project where it really stood out was laying out a rake wall with studs at 16 inches on center. The calculations made it easy to get perfect saw cuts so everything nailed up cleanly and matched the pitch exactly. I would definitely recommend this calculator for any construction use. It’s a great tool that earns its place on the jobsite.

## Features

- SOLVE ALL YOUR DIMENSIONAL MATH quickly and accurately with the award-winning CM Pro construction calculator’s powerful built-in solutions for completing layouts, plans, bids, estimates and more, directly in the building units you prefer
- LETS YOU EFFORTLESSLY WORK IN AND CONVERT between all common building dimension formats: feet-inch-fractions, decimal feet-inches, yards and metric -- including area and volume. Plus weight-per-volume and D:M:S to decimal degree conversions too
- TIME-SAVING BUILT-IN FUNCTIONS for right angles give you instant solutions for square-ups, rafters (hip, valley, jacks), rake-walls, slopes, angles and more. Plus complete stair layout, advanced solutions for arcs, arches, circles, columns and more
- PREVENTS COSTLY MATERIAL WASTE with built-in solutions for roofing, drywall, studs, blocks, concrete footings and board-feet lumber estimating. Plus compound miter functions help you avoid errors when working with crown molding and other pricey millwork

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0007Q3RGQ |
| Batteries | 2 LR44 batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | No |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #3,350 in Office Products ( See Top 100 in Office Products ) #9 in Scientific Calculators |
| Color | Silver |
| Customer Reviews | 4.8 4.8 out of 5 stars (5,757) |
| Date First Available | July 14, 2008 |
| Display Style | LCD |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 8.2 ounces |
| Item model number | 4065 |
| Manufacturer | Calculated Industries |
| Material | Plastic |
| Measurement System | metric |
| National Stock Number | 4820-01-299-7444 |
| Part Number | 4065 |
| Pattern | Calculator |
| Power Source | Battery Powered |
| Product Dimensions | 5.75 x 3 x 0.6 inches |
| Style | Handheld |
| Voltage | 1.5 Volts |
| Warranty Description | 1 year manufacturers |

## Product Details

- **Brand:** Calculated Industries
- **Calculator Type:** Construction/Building
- **Color:** Silver
- **Power Source:** Battery Powered
- **Screen Size:** 2.6 Inches

## Images

![Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Calculator for Contractors, Estimators, Builders, Framers, Remodelers, Renovators and Carpenters - Image 1](https://m.media-amazon.com/images/I/71M5jQzqpsL.jpg)

## Available Options

This product comes in different **Pattern, Style** options.

## Questions & Answers

**Q: Looking for gift for roofer husband who just got licensed. Is this a good tool for a roofer?**
A: I got this for my husband and he tells me every time he uses it how much he loves it. It does everything that he needs. One of the best gifts ever. I use it a lot myself, so hope he will get me one soon.

**Q: I have a older version...maybe 5 yrs? Is this one more advanced?**
A: Thanks for your question.  There have been no significant changes to the Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Calculator in the last 5 years other than the addition of the Armadillo Gear as standard.  If you have one that is no longer working, you can send it in for repair.

**Q: Does the CI 4065 pro delivered have an orange back or black back?**
A: the calculator it's self has a black back, i got mine with the armadillo gear cover and the main body including the back is orange but the flip cover face is a dark graykevin

**Q: Will it tell me the amount of concrete i need for a slab?**
A: Thanks for your question. The Calculated Industries Construction Master Pro Calculator will calculate cubic yards using the Length Width and Height keys. This is a great all around Construction Calculator, however if you are dealing primarily in concrete you might want to check out the Calculated Industries ConcreteCalc Pro as it has advanced rebar and column functionality. Here is the link: https://www.amazon.com/Calculated-Industries-ConcreteCalc-4225-Calculator/dp/B000VKD4B6/ref=sr_1_1?ie=UTF8&qid=1536678826&sr=8-1&keywords=concrete+calculator

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality, reliability, good product
*by G***Z on January 25, 2026*

It is has a good used

### ⭐⭐⭐⭐⭐ Accurate, time-saving construction calculator
*by K***N on February 3, 2026*

I’ve had this construction calculator for a while now and absolutely love it. I use it most often for roof pitch calculations and for confirming square, and it’s been consistently accurate. Once you get the hang of how it works, it’s quick, easy, and very efficient. It really saves time compared to doing everything manually or double-checking with other methods. One project where it really stood out was laying out a rake wall with studs at 16 inches on center. The calculations made it easy to get perfect saw cuts so everything nailed up cleanly and matched the pitch exactly. I would definitely recommend this calculator for any construction use. It’s a great tool that earns its place on the jobsite.

### ⭐⭐⭐⭐⭐ Good for anyone who does a lot of fractional adding.
*by H***Y on December 13, 2025*

Great product I have used the small handheld models for over 20 years and this works just as good and easier to see the numbers.

## Frequently Bought Together

- Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Calculator for Contractors, Estimators, Builders, Framers, Remodelers, Renovators and Carpenters
- Aproca Hard Storage Travel Case, for Calculated Industries 4065 4080 Construction Master Pro Calculator (Case Only)
- Calculated Industries 2140 Construction Master Pro Workbook and Study Guide | 4 Comprehensive Sections | Site Development | Footings, Slabs, Walls | Framing | Finishing |Practice Problems, Answers

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-21*